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BZT52C11-7-F

11V zener diode, Q1 gate-source clamp — Diodes Incorporated — C92321 — board-a D8 — rec-bzt52c11-c92321

Everything below is projected from this project's stored component evidence. Values keep the exact wording, conditions, units and verdicts they were recorded with — nothing here is re-typed, corrected, or combined into an overall judgement about the part.

This record in the catalog: BZT52C11-7-F

Identity

  • Record ID: rec-bzt52c11-c92321

  • Record kind: standalone

  • Manufacturer part number: BZT52C11-7-F

  • Manufacturer: Diodes Incorporated

  • Function: 11V zener diode, Q1 gate-source clamp

  • Orderable ID: C92321

  • Package: SOD-123_L2.8-W1.8-LS3.7-RD

  • Inventory line: line-c92321

  • Also known as: zener diode, gate clamp

  • Fit: Fitted

  • Identity state: VERIFIED

  • Source state: AVAILABLE

  • Coverage: 1 open of 3 published

Placements

Every position this exact line occupies in the as-built design. One line may be placed many times and across more than one board.

BoardReference designatorFit
board-aD8Fitted

Coverage

Coverage is stated one domain at a time and is never rolled up. A domain marked open is a question that has not been answered; it is not a finding that the part is unsuitable. A record with no open domains has not thereby been declared safe.

electrical-limits

  • Coverage ID: cov-bzt52c11-electrical-limits

  • Status: COVERED

Reason: Zener window (10.4-11.6 V at 5 mA, exactly the dec-e locked window), minimum knee (10.4 V), leakage (0.1 uA at 8.0 V), impedance (ZZT 20 Ohm at 5 mA), and power dissipation (500 mW at TL=+75 C) are primary-source confirmed from the exact BZT52C11 row of DS18004 Rev. 38-2.

Facts in this domain:

distributor-identity

  • Coverage ID: cov-bzt52c11-distributor-identity

  • Status: COVERED

Reason: Exact orderable C92321 is bound to Diodes Incorporated BZT52C11-7-F by the dated LCSC product page identity extract (2,540 units in stock at the 2026-08-14 retrieval).

Facts in this domain:

gate-clamp-application

  • Coverage ID: cov-bzt52c11-gate-clamp-application

  • Status: OPEN

Reason: dec-e-q1-20v-gate-guard NEEDS BENCH residuals: sub-knee conduction/leakage at the 9.62 V operating point (0.78 V below the 10.4 V minimum knee, with no leakage guarantee above VR 8.0 V) and Q1 gate soft-start behavior with the added junction capacitance; both wait on the Board A bring-up bench.

Facts in this domain:

Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.

Facts

Each fact keeps its value, its unit, the conditions it holds under, where it came from and how far it has been confirmed as separate fields, because they are separate claims. A value without its conditions is not the same fact, and a verdict is about the evidence for the value, not about the part.

GUARANTEED_ELECTRICAL

A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.

FactValueUnitConditionsVerdictProvenanceEvidence
fact-bzt52c11-vz-min10.4Vminimum zener (knee) voltage VZ at IZT 5 mA, TA=+25 C; the deterministic lower bound of the clamp windowPASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 2 electrical characteristics table, BZT52C11 row, VZ min column
fact-bzt52c11-ir-leakage0.1uAmaximum reverse leakage IR at VR 8.0 V, TA=+25 C; the datasheet guarantees leakage only at 8.0 V, below the 9.62 V divider operating point, so sub-knee leakage at the operating point is not primary-boundedPASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 2 electrical characteristics table, BZT52C11 row, IR and VR columns
fact-bzt52c11-zzt20Ohmmaximum zener impedance ZZT at IZT 5 mA, f=1 kHz; ZZK 150 Ohm at IZK 1.0 mA in the same rowPASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 2 electrical characteristics table, BZT52C11 row, ZZT and ZZK columns

THERMAL_SOA

Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions.

FactValueUnitConditionsVerdictProvenanceEvidence
fact-bzt52c11-pd500mWpower dissipation PD at TL=+75 C (Note 7); 370 mW at TA=+25 C on FR-4 (Note 8); orders of magnitude above the R12-limited clamp dissipation (~4.2 mW worst case at the 32.4 V clamp table point)PASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 2 thermal characteristics table, PD rows

PROTECTION_BREAKDOWN

The voltage at which a protection device begins to conduct.

FactValueUnitConditionsVerdictProvenanceEvidence
fact-bzt52c11-vz-window10.4 to 11.6Vzener voltage VZ minimum/maximum at IZT 5 mA, TA=+25 C, exact BZT52C11 row (11 V nominal, marking code WG); equals the dec-e-q1-20v-gate-guard locked window 10.4-11.6 V exactlyPASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 2 electrical characteristics table, BZT52C11 row, VZ nom/min/max and IZT columns

PROJECT_STATE

A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification.

FactValueUnitConditionsVerdictProvenanceEvidence
fact-bzt52c11-manufacturerDiodes IncorporatedNONEexact orderable identity; document served from the manufacturer domain diodes.comPASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 1 title block (BZT52C2V0 - BZT52C51, Document number DS18004, (c) Diodes Incorporated) and manufacturer-domain hosting; page 2 exact BZT52C11 row
fact-bzt52c11-identitylcsc=C92321; manufacturer=Diodes Incorporated; mpn=BZT52C11-7-F; variant=unidirectional 11 V zener, SOD-123 (SOD123) tape/reel, commercial grade -7-F; LCSC listing stock 2,540 units at 2026-08-14 retrievalNONEstable distributor identity binding of the exact orderable; same-name cross-vendor substitution prohibited (a BZT52C11 from any other vendor is a different part); supplies no electrical or thermal authority. Stock figure inside the variant string is a dated observation.CONFIRMED - distributor identity onlyDISTRIBUTOR-IDENTITYsrc-bzt52c11-lcsc-identity: product page title row and stock row, retrieved 2026-08-14
fact-bzt52c11-polaritycathode bandNONEmanufacturer marking rule for the SOD123 package; project pad mapping is recorded in the owner pin map (pin/pad 1 = cathode)PASS - primary-source confirmedPRIMARY-SPECsrc-bzt52c11-diodes-primary: page 1 mechanical data, polarity statement row
fact-bzt52c11-knee-margin-15v0.78 V margin between the 9.62 V gate-divider operating point at the 15 V contract and the 10.4 V minimum knee; sub-knee conduction at 15 V is a bench checkNONEdec-e-q1-20v-gate-guard NEEDS BENCH residual: |Vgs| = 15 x 100k/(100k+56k) = 9.62 V at the legal 15 V contract sits 0.78 V below the 10.4 V minimum knee (fact-bzt52c11-vz-min); the datasheet leakage guarantee stops at VR 8.0 V (fact-bzt52c11-ir-leakage), so conduction/leakage at the operating point must be measured on the bench — if it conducts, step the window to a 12 V-nominal partNEEDS BENCHPROJECT-CHOICEsrc-bzt52c11-diodes-primary: page 2 electrical characteristics table, BZT52C11 row (VZ min, IR/VR columns) versus the locked R11/R12 divider in scripts/schgen/decisions.json dec-e-q1-20v-gate-guard
fact-bzt52c11-d8-orientationD8 cathode (pin 1) on VBUS_IN (Q1 source), anode (pin 2) on Net-(Q1-G), reverse-biased by |Vgs| in normal operationNONEdec-e-q1-20v-gate-guard placement, locked by scripts/schgen/board_a_spec.py (D8 in NETS: VBUS_IN += D8.1, Net-(Q1-G) += D8.2) and the generated board-a schematic; Eeschema ERC/visual review and gate soft-start behavior with the added junction capacitance remain open bench itemsNEEDS BENCHPROJECT-CHOICEsrc-bzt52c11-diodes-primary: page 1 mechanical data polarity row (cathode band) versus the generator-spec pin lock; bench soft-start/turn-on measurement pending

Pin maps

The mapping between the schematic symbol's pins and the footprint's pads, as recorded. A record may carry more than one map when the same part is documented in more than one context.

pinmap-bzt52c11-c92321

  • Symbol: BZT52C11-7-F_C92321

  • Footprint: SOD-123_L2.8-W1.8-LS3.7-RD

  • Pins: 2

Pin assignments
Symbol pinNameFootprint padFunction
1K1cathode (band end); board-a D8: VBUS_IN = Q1 source
2A2anode; board-a D8: Net-(Q1-G) = Q1 gate

Interactions

Behaviour that is not a property of this part alone. Each interaction names the records it spans, the conditions it holds under, and how far it has been confirmed. An interaction that spans several parts appears on every one of their pages, under the same identifier, because it is equally a fact about each.

int-bzt52c11-gate-clamp

  • Records involved: rec-bzt52c11-c92321 (this record)

  • Conditions: D8 across the Q1 gate-source (cathode on VBUS_IN, anode on Net-(Q1-G)) bounds |Vgs| to the 10.4-11.6 V window in every reachable state that would otherwise exceed the AO3401A +/-12 V Vgs abs-max (unprogrammed 20 V PDO3 attach: -12.82 V unclamped; D5 clamp event with VBEN asserted: -20.77 V unclamped), with clamp current R12-limited to ~161 uA at 20 V and ~382 uA at 32.4 V per dec-e-q1-20v-gate-guard; sub-knee behavior at the 15 V operating point and gate soft-start with the added junction capacitance are the recorded bench residuals

  • Verdict: NEEDS BENCH

Facts this rests on:

Cross-component rules

Rules that span several parts at once and are published in full on the integration page. Each rule's verdict below is that rule's own — it is a statement about the cross-component question, not about this part — and the exact wording of what the rule refuses to conclude is published with the rule itself.

No cross-component rule names this record.

Sources

Every document cited above, with its identification, when it was retrieved, and what kind of authority it carries. Sources that could not be retrieved are listed too, with their unavailability stated, so a gap in the evidence is visible rather than absent.

Diodes Incorporated BZT52C2V0 - BZT52C51 surface mount zener diode

  • Source ID: src-bzt52c11-diodes-primary

  • Document number: DS18004 Rev. 38 - 2

  • Revision: Rev. 38 - 2

  • Document date: 2017-10-01

  • Retrieved: 2026-08-14

  • Authority: MANUFACTURER_PRIMARY

  • Locator: Page 2 electrical characteristics table, exact BZT52C11 row (marking code WG) and thermal characteristics table; page 1 mechanical data (Case: SOD123, Polarity: Cathode Band) and ordering information table, (Type Number)-7-F row

  • Printed page: 2

  • Availability: AVAILABLE

  • Document URL: https://www.diodes.com/assets/Datasheets/ds18004.pdf

LCSC product page C92321 — BZT52C11-7-F | Zener Diodes | Diodes Incorporated | LCSC

  • Source ID: src-bzt52c11-lcsc-identity

  • Document number: C92321

  • Revision: volatile web page (as retrieved)

  • Document date: 2026-08-14

  • Retrieved: 2026-08-14

  • Authority: DISTRIBUTOR_IDENTITY

  • Locator: Product page title row 'BZT52C11-7-F' (Diodes Incorporated, Zener Diodes category, SOD-123 package) and the stock row (2,540 in stock, 20-piece minimum), retrieved 2026-08-14

  • Printed page: 1

  • Availability: AVAILABLE

  • Document URL: https://www.lcsc.com/product-detail/C92321.html

Legend

What the recorded terms on this page mean, in ordinary words. The exact terms above are the ones that count; these descriptions explain them and never replace them.

Verdict

Recorded termWhat it means
CONFIRMED - distributor identity onlyA distributor listing confirms which part this is, and nothing more. It carries no electrical, thermal or lifetime authority.
NEEDS BENCHCannot be settled from documents. It needs measurement on real hardware before it can be relied on.
PASS - primary-source confirmedConfirmed against the manufacturer's own document for this exact part.

Provenance

Recorded termWhat it means
DISTRIBUTOR-IDENTITYTaken from a distributor listing. Identity information only.
PRIMARY-SPECTaken from the manufacturer's own specification document.
PROJECT-CHOICEA decision made by this project. No vendor asserts it.

Fact class

Recorded termWhat it means
GUARANTEED_ELECTRICALA parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.
PROJECT_STATEA value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification.
PROTECTION_BREAKDOWNThe voltage at which a protection device begins to conduct.
THERMAL_SOAThermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions.

Coverage status

Recorded termWhat it means
COVEREDEvery question this domain asks is answered by the facts listed against it.
OPENUnresolved. Open means the question has not been answered, not that the part is unsafe — the reason states what is missing.

Source availability

Recorded termWhat it means
AVAILABLEThe document was retrieved and is on record.

Source authority

Recorded termWhat it means
DISTRIBUTOR_IDENTITYA distributor listing. Establishes which part this is, nothing more.
MANUFACTURER_PRIMARYThe manufacturer's own document for this exact part.

Identity state

Recorded termWhat it means
VERIFIEDThe exact orderable part has been confirmed against a source.

Source state

Recorded termWhat it means
AVAILABLEAt least one document backing this line was retrieved.

Unit

Recorded termWhat it means
NONEThe value is not a physical quantity, so it carries no unit. Recorded as `NONE`.

Raw agent resource

This page is generated from a stored evidence bundle and does not restate it. The bundle is the source of truth: where the two ever disagree, the bundle is right and this page is stale.

The owning bundle is not identified in the published model, so no reciprocal link can be given for this record.

Revision History

Takeshi TakatsudoCreated: 2026-08-15T01:18:50+09:00Updated: 2026-08-15T01:18:50+09:00